Changes to games.hpp

There are a few additional changes we will need to make to our game.hpp file. In addition to our UIButton class, we will need to add a UISprite class definition file. The UISprite is just a plain, ordinary image drawn in canvas space. It will not have any functionality on top of just being a sprite rendered as a UI element. Here is what the definition looks like:

class UISprite {
    public:
        bool m_Active;
        SDL_Texture *m_SpriteTexture;
        SDL_Rect m_dest = {.x = 0, .y = 0, .w = 128, .h = 32 };
        UISprite( int x, int y, char* file_name );
        void RenderUI();
};

Like the button, it has an active state that's represented by the m_Active attribute. If this value is false, the sprite will not render. It also has a sprite texture and a destination attribute that tells the renderer what to draw and where to draw it:

SDL_Texture *m_SpriteTexture...